Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Welsh ugain
← Breton ugent (cognate)
← Proto-Celtic *wikantī (inherited)
← Proto-Indo-European *h₁wih₁ḱm̥t (inherited)
← Proto-Indo-European *dwi(h₁)dḱm̥ti (mention)
← Cornish ugens (cognate)
← Latin vīgintī (cognate)
← Old Welsh uceint (inherited)
← Old Irish fiche (cognate)

→ Breton ugent (cognate)
→ Welsh ugeiniau (suffix)
→ Welsh deugain (compound)
→ Welsh trigain (compound)
→ Welsh pedwar ugain (compound)
→ Welsh chweugain (compound)
→ Welsh un ar hugain (compound)
→ Welsh dau ar hugain (compound)
→ Welsh tri ar hugain (compound)
→ Welsh pedwar ar hugain (compound)
→ Welsh pump ar hugain (compound)
→ Welsh chwech ar hugain (compound)
→ Welsh saith ar hugain (compound)
→ Welsh wyth ar hugain (compound)
→ Welsh naw ar hugain (compound)
→ Welsh deg ar hugain (compound)
→ Welsh ugeinfed (affix)
→ Welsh ail ar hugain (compound)
→ Welsh unfed ar hugain (compound)
→ Welsh trydydd ar hugain (compound)
→ Welsh trydedd ar hugain (compound)
→ Welsh un ar ddeg ar hugain (compound)
→ Welsh pedwerydd ar hugain (compound)
→ Welsh pumed ar hugain (compound)
→ Welsh chweched ar hugain (compound)
→ Welsh seithfed ar hugain (compound)
→ Welsh wythfed ar hugain (compound)
→ Welsh nawfed ar hugain (compound)
→ Welsh degfed ar hugain (compound)
→ Welsh unfed ar ddeg ar hugain (compound)
→ Welsh deg a phedwar ugain (compound)
→ Welsh pedwar ar bymtheg a phedwar ugain (compound)
→ Welsh pedwerydd ar bymtheg a phedwar ugain (compound)
→ Welsh deuddeg ar hugain (compound)
→ Basque hogei (cognate)
→ Irish fiche (cognate)
→ Scottish Gaelic fichead (cognate)
→ Ancient Greek εἴκοσι (cognate)
→ Manx feed (cognate)
→ Latin viginti (cognate)